有关太阳能跟踪器中英文翻译资料

有关太阳能跟踪器中英文翻译资料内容摘要：

d daunting. After consulting Dr. Rhett George, we decided on a device using two panels and shading for sensed motion.4. Analysis and Embodiment Structure GeometryThe geometry of the frame was created in order to allow the solar panels to absorb light efficiently. This was done by allowing rotation in the eastwest direction for tracking the sun daily and a 36176。 inclination (Durham’s latitude) towards the south. Because this frame was designed to be placed on a roof with a slope of 25176。 , the actual incline of the frame was made to be 11176。 .The geometry of the existing platform structure was modified. This was done in order to incorporate the results from the Clear Day Model supplied to us by Dr. Knight. This model led to the conclusion that the platform should track to up to 60176。 in both directions of horizontal. Thus, the angle range of the frame had to be increased. The sides of the frame were brought in to increase the allowable angle of rotation, and they were brought in proportionally to maintain the inclination angle of 11176。 . Also, crosspieces were moved to the inside of the frame to allow greater rotation of the platform before it came into contact with the support structure.The panels used for sensing and powering rotation were placed on the plane of the platform. Mirrors were placed perpendicular to and in between the panels to shade one and amplify the other in order to produce a difference to power the motor. The sensing panels were placed outside the platform area to maintain the largest area possible for collecting panels. A third sensing panel was mounted nearly vertical and facing east to aid rotation back towards the sun in the morning. This panel was attached to the frame under the platform, so that during most of the day, it’s shaded with minimal effects on sensed rotation.Minimizing the torques on the motor was a main concern in order to minimize the motor power needed. The platform designed for the placement of the collecting solar panels was placed under the rotational shaft so that the panels would be aligned with it the rotational axis. Since the main panels prise the majority of the weight putting these in the plane of the rotational axis reduces torque on the shaft. The sensing panels were placed symmetrically about the axis of rotation in order to prevent additional torque on the motor. The third panel was attached to the frame instead of the platform or rotational shaft so as to also avoid any torque. MaterialsMaterials selection for most of the frame was simple because it had already been constructed. The mirrors used for the amplification and shading of the sensing panels were also already purchased and available for use. Additional parts for attachment of the panels and mirrors to the frame were taken from the scrap pieces available in the machine shop. In our selection of sensing panels, size and power needed to be balanced effectively. The panels were to be as small as possible in order to add minimal stress and weight to the frame but also needed to be powerful enough to power the rotation of the platform. Therefore, the most powerful of the intermediate sized panels available were selected. The panels purchased also appeared to be the most reliable of our options. Drive MechanismAfter designing a prototype and testing it, the motor purchased and used by the previous solar tracker group was slipping. It was removed, and the installation of a gear system with another simple motor was suggested and attempted. Professor Knight supplied some gears as well as some belts and pulleys. One end of the shaft was lathed so that one of the pulleys could be set on it, and spacers were bought so that a 6V motor we had available could power another pulley. These pulleys were to be connected by a belt. This motor demonstrated insufficient strength to turn the rotational shaft. The original motor, once detached, was taken apart and examined. Itappeared to be working again so a new pulley was purchased to fit it and was attached in the place of the 6V motor. 5. Detailed Design FrameThe frame was designed from one inch square aluminum tubing, and a five foot long, two inch square tube for the axle. It is constructed with a rigid base and triangular prismatic frame with side supporting bars that provide stability. The end of the axle is attached to a system of pulleys which are driven by the motor. It is easily transported by removing the sides of the base and folding the structure. SensorOur sensing panels are bolted to the bottom of the main solar panel frame and braced underneath with half inch Lbrackets. The mirrors are attached to the inside of the sensing panels and braced by Lbrackets as well. The whole structure attaches easily to the main panel frame which is attached to the main axle using four 2inch Ubolts. A third panel is bolted to the structure to return the main panels direction towards the horizon of sunrise. How the Sensor WorksOur sensor creates movement of the motor by shading one of the panels and amplifying the othe。